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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 13, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Feb. 13, 2023 | Jun. 16, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |
Research and development |  | $ 10,915 | $ 6,802 |  |  |
Interest expense |  | (212) | (63) |  |  |
Accumulated deficit |  | 424,752 |  | $ 400,346 |  |
Net loss |  | 24,406 | 11,553 |  |  |
Net cash outflows from operations |  | 13,574 | 9,509 |  |  |
Cash |  | 8,988 |  | $ 7,065 |  |
Working capital deficit |  | $ 3,400 |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
ELOC, right to sell common stock |  |  |  |  | $ 35,000 | $ 150,000
Common stock, par value (in usd per share) |  | $ 0.0001 |  | $ 0.0001 |  | $ 0.0001
ELOC, ownership restriction percentage |  |  |  |  |  | 9.90%
ELOC, floor stock price (in usd per share) |  |  |  |  |  | $ 1.00
Proceeds from stock issuance |  | $ 15,700 |  |  |  |
Issuance of stock (in shares) |  | 13,239,654 |  |  |  |
Marketable investments |  | $ 1,200 |  | $ 1,200 |  |
Warrants, quoted price (in usd per share) |  | $ 0.07 |  |  |  |
Warrants outstanding (in shares) |  | 17,916,609 |  |  |  |
SR&ED investment tax credit |  | $ 0 | $ 400 |  |  |
Revision of Prior Period, Error Correction, Adjustment |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |
Research and development |  |  |  | 300 |  |
Interest expense |  |  |  | $ 300 |  |
Term Loan | Line of Credit | Subsequent Event |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | $ 50,000 |  |  |  |  |
Drawdown fee percentage | 2.00% |  |  |  |  |
Interest rate | 10.00% |  |  |  |  |
Interest rate, PIK | 11.00% |  |  |  |  |
Premium payment, percentage of amount prepaid from common stock issuance proceeds | 10.00% |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt repayment period one |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment premium percentage | 3.00% |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt repayment period two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment premium percentage | 2.00% |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt repayment period three |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment premium percentage | 1.00% |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt tranche one |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | $ 15,000 |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt tranche two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | 15,000 |  |  |  |  |
Term Loan | Line of Credit | Subsequent Event | Debt tranche three |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount | 20,000 |  |  |  |  |
Non-dilutive financing | $ 25,000 |  |  |  |  |

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